1981 CHEVROLET K20 Transmission & Drivetrain

Clutch Kit, Organic, 1 1/8 in.- 10-Spline, 12 in. Disc, Chevy, GMC, Pickup, SUV, Van, L6, V8, Kit

Part Number: ZZZ-MU1862-1

3.0 out of 5 stars ( 4 )

Estimated Ship Date: May 18, 2026 if ordered today

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Sprag, Intermediate, Steel, 34-Element, GM, TH400, Each

Part Number: TCI-227900

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Pilot Bushing and Bearings, Stock, Roller, Powdered Metal, Each

Part Number: RNB-690-057

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Differential Carrier, Positraction, 30-spline, Steel, Rear, Chevy, GMC, GM 10.5 in. 14-bolt, Each

Part Number: SUM-730987

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Transmission Modulator Valve, GM, TH350, Each

Part Number: ATP-JX67

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Today

Axle Bearing, 2.985 in. O.D., GM, 9.5 in. Outer, Each

Part Number: YGA-10003

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Transmission Filter, Replacement, TH400, Buick, Chevrolet, GMC, Jeep, Oldsmobile, Pontiac, Each

Part Number: WIX-58881

3.5 out of 5 stars ( 8 )

Estimated Ship Date: Today

Ring and Pinion Installation Kit, GM, 8.5 in., 10-Bolt, Kit

Part Number: RMG-831021TE

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.56:1 Ratio, GM, 9.5 in., 14-Bolt, Truck, Set

Part Number: MGR-GM9-5-456

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Ring and Pinion-GM 8.5/8.625

Part Number: MGR-GM10-308A

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Estimated Ship Date: Mar 16, 2026 if ordered today

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Axle Shaft, Rear, 6 x 5.50 in. Bolt Circle, GM, Each

Part Number: HUU-02-116

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Estimated Ship Date: Today

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Automatic Transmission Lever, Steel, Natural, Each

Part Number: HUU-1050180

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

Ring & Pinion Gear, 5.13 Ratio, GM, 10.5 in., 14-Bolt, Set

Part Number: YGA-24139

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Estimated Ship Date: Mar 25, 2026 if ordered today

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Carrier Shims, Super, Steel, Kit

Part Number: YGA-55001

4.87 out of 5 stars ( 15 )

Estimated Ship Date: Today

Pilot Bearing, Roller, Steel, AMC, Buick, Chevy, GMC, Jeep, Oldsmobile, Pontiac, Studebaker, Each

Part Number: TMK-PB656HD

4.5 out of 5 stars ( 8 )

Estimated Ship Date: Today

Clutch Kit, Magnum Force, 1.125 in.-26, Aluminum Flywheel, 8.0 in. Disc, Circle Track, Road Race, Kit

Part Number: MCL-651002-00-07

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Differential Pinion Bearing Kit, GM 8.875 in. Truck, Koyo Bearings, Chevy, GMC, Kit

Part Number: MGR-R12RPK

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Automatic Transmission Filter, TH400, AM General, Buick, Cadillac, Checker, Chevy, Ferrari, GMC, Jaguar, Each

Part Number: ADO-TF231

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Transmission Fluid Dipstick Components, Automatic Transmission Dipstick Tube Seals, Tube Grommet, 1.015 in. Bore Diameter, Ford, GM, Each

Part Number: ATP-SO35

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Differential Carrier Rebuild Kits and Spider Gears, Open Differential Internal Kits, GM 9.25/9.25 IFS/9.5 in., 33-spline, 14-bolt, Chevy, Dodge, Kit

Part Number: MGR-GM95BI

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.88:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885488

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Differential Shims, Carrier, Steel, GM, 8.5 in., 8.625 in., Kit

Part Number: MGR-GM10MSK

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Differential, Posi Performance, Limited Slip, 30-Spline, 2.76-3.42 Gear Ratios, GM, 12-Bolt, Each

Part Number: HUU-02-124

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Spider Gears, Internal Kit, Front or Rear, Side Gears, Cross Shaft Pin and Bolt, GM, 8.5 in., 30 Spline, Kit

Part Number: YGA-16055

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Clutch Kit, 5/6-Speed Conversion, Organic, 1 .125 in.-26-Spline, 10.5 in. Diameter Disc, Buick, Checker, Chevy, GMC, Pontiac, Oldsmobile, Kit

Part Number: HAY-83-1100

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Estimated Ship Date: Mar 16, 2026 if ordered today

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